package com.atguigu.springcloud.alibaba.controller;

import com.alibaba.csp.sentinel.annotation.SentinelResource;
import com.alibaba.csp.sentinel.slots.block.BlockException;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

@RestController
@Slf4j
public class FlowLimitController {

    @GetMapping("/testA")
    public String testA() {

        return "----testA";
    }

    @GetMapping("/testB")
    public String testB() {

        log.info(Thread.currentThread().getName() + "\t" + "----testB");
        return "----testB";
    }

    @GetMapping("/testD")
    public String testD() {

//        try {
//            TimeUnit.SECONDS.sleep(1);
//        } catch (InterruptedException e) {
//            e.printStackTrace();
//        }
        log.info("testD 异常比例");
        int age = 10 / 0;
        return "----testD";
    }

    @GetMapping("/testE")
    public String testE() {

        log.info("testE 测试异常数");
        int age = 10 / 0;
        return "----testE 测试异常数";
    }

    @GetMapping("/testHotKey")
    @SentinelResource(value = "testHotKey", blockHandler = "deal_testHotKey") // SentinelResource处理的sentinel控制台配置的违规情况，有blockHandler方法配置的兜底处理
    public String testHotKey(@RequestParam(value = "p1", required = false) String p1, @RequestParam(value = "p2", required = false) String p2) {

//        int age = 10 / 0; 这是java运行时报出的运行时异常RunTimeExcption，@SentinelResource不管
        return "----testHotKey";
    }

    /**
     * 兜底方法
     *
     * @param p1
     * @param p2
     * @param exception
     * @return
     */
    public String deal_testHotKey(String p1, String p2, BlockException exception) {

        return "----deal_testHotKey, o(╥﹏╥)o"; // sentinel的默认提示都是： Blocked by Sentinel (flow limiting)
    }

}